Oscillating brush

ABSTRACT

An oscillating brush device comprising a pair of racks which are driven in reciprocation as is a gear mounted on the brush shaft. The racks are slotted at one end and receive eccentric cams mounted on a worm wheel to impart the desired reciprocation of the brush.

0 United States Patent 1 1 1111 9 Thomas Feb. 11, 1975 OSCILLATING BRUSH2,196,667 4/1940 Moseley 1s/22 R 3,046,584 7 1962 W f [761 Inventor:Amed 309 Lafayette 3 281,878 11/1966 15/22 R Ave., Brooklyn, NY. 11238 i[22] Filed: June 1973 Primary Examiner-Edward L. Roberts [21] Appl. No.:374,313

52 us. (:1 15/22 R, 74/78, 310/83 1571 ABSTRACT [51] Int. Cl A46b 13/02An Oscillatin I g brush devlce compr1s1ng a pair of racks [58] held of22361 3 3 55 which are driven in reciprocation as is a gear mounted l onthe brush shaft. The racks are slotted at one end 56 R f d and receiveeccentric cams mounted on a worm wheel 1 e erences to impart the desiredreciprocation of the brush.

UNITED STATES PATENTS 1,007,090 10/1911 Gaynor 15/26 1 Claim, 4 DrawingFigures OSCILLATING BRUSH This invention relates to motor driven toolsand, in particular, to rotative brushes used for example, to scour andclean pots and pans.

The invention contemplates an oscillating brush the reciprocating motionof which provides enhanced efficiency in dislodging particles on potsand pans which have been stuck to the cooking surfaces under hightemperatures and in some cases pressures. The present oscillating brushhas proven highly efficient in comparison with the ordinary rotary brushand hand scouring.

One object of the invention is to provide an improved motor-driven brushdevice.

Other objects and advantages of the invention may be appreciated onreading the following description of an embodiment thereof which istaken in conjunction with the accompanying drawings, in which:

FIG. 1 is a perspective view of the invention;

FIG. 2 is an enlarged side view with parts broken away to show thearrangement of the drive means;

FIG. 3 is a horizontal sectional view showing the worm drive andreciprocating means and taken on the line 3-3 of FIG. 2; and

FIG. 4 is a cross-sectional view and taken on the line 44 of FIG. 2.

Referring to the drawings and, more particularly to FIG. 1, there isshown a pot and pan cleaning brush comprising a handle 12, a housing 14for the drive means employed to oscillate brush 16. The handle 12, whichis hollow, is provided with a motor 18 powered by battery 20 andactuated by the switch 22.

A worm screw 24 mounted on the armature shaft of motor 18 is in drivingengagement with a worm wheel 26 on shaft 28, which in turn is supportedby bearing brackets 30 and 32 fixed in the handle 12.

Eccentrically mounted on opposite sides of the worm wheel 26 are cams 34and 36. A pair of symetrical reciprocating members 38 and 40 having camfollower slots 42 and 44 engaging the eccentric cams 34 and 36,

respectively, which are in opposite phase to impart reciprocal motion tothe members. The recirpocating members 38 and 40 are provided with racks46 and 48 on the inner edges of their free ends. Pinion 50 mounted onshaft 52 engages on opposite sides thereof the racks 46 and 48. Thearrangement is such that the pinion 50 is oscillated in a strain freemanner about its axis by the simultaneous push-pull action of the racks46 and 48.

As best seen in FIG. 4, the members 38 and 40, with their racks 46 and48, are guided and maintained in engagement with the pinion 50 by aplatform 54 having rails 56 and 58. A top plate 60 is supported on posts62 and 64 fixed to platform 54 to guide the top edges of members 38 and40.

The pinion shaft 52 extends below the housing I4 and terminates in aretaining socket 66 to accommodate a half-round stud 68 for driving thebrush 16 in oscillation being held therein by C-spring 70, thuspermitting its replacement or the use of other types of brushes.

Various modifications of the invention may be appreciated by personsskilled in the art without departing from the scope and principle of theinvention as defined in the appended claims.

What is claimed is:

1. An oscillating brush device comprising a housing, a pinion shaftmounted in said housing and extending therethrough, a brush secured tothe pinion shaft outside said housing, a pinion mounted on the shaftwithin the housing, a pair of racks engaging said pinion respectively onopposing sides thereof, a motor mounted in said housing and having arotary drive shaft, a worm screw in driven connection with said shaft, aworm wheel engaging said worm screw, a cam mounted on each face of saidworm wheel in opposite phase, each of said racks being operativelyconnected to one of said cams whereby oscillatory motion is imparted tosaid brush upon rotation of said shaft.

1. An oscillating brush device comprising a housing, a pinion shaftmounted in said housing and extending therethrough, a brush secured totHe pinion shaft outside said housing, a pinion mounted on the shaftwithin the housing, a pair of racks engaging said pinion respectively onopposing sides thereof, a motor mounted in said housing and having arotary drive shaft, a worm screw in driven connection with said shaft, aworm wheel engaging said worm screw, a cam mounted on each face of saidworm wheel in opposite phase, each of said racks being operativelyconnected to one of said cams whereby oscillatory motion is imparted tosaid brush upon rotation of said shaft.